Basically breadcrumbs are internal links. They make the web site navigation easier. Here is what they might look like:

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Breadcrumbs options allow you add custom or default breadcrumbs, as well as disable them at all. When you add custom breadcrumbs, you can add any link there, as well as any text label for it. You can as well add as many elements to breadcrumbs path as you like

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You can choose one of the pages, posts or projects links to add it as a breadcrumb. When the link is chosen, it appears in the menu and can be edited, deleted or moved up and down:

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